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ID32050387Published Date2020-04-10JournalThe Science of the total environment, 2020-04-10, Volume 712
Granular sludge usually takes extracellular polymers (EPS) as matrices for colonizing microorganisms and maintaining structural stability. However, the low strength of EPS threatens the disintegration of granules, especially under low hydraulic shear force. To accelerate the formation and enhance the stability of granules, micro-sized melamine (ME) sponges (RA) and polyurethane (PU) sponges (RB) were screened out as matrix substitutes for developing aerobic granular biofilm (AGB) in this stud…
Publication
ID31901847Published Date2020-04-05JournalJournal of hazardous materials, 2020-04-05, Volume 387
The halogenated antimicrobial triclocarban (TCC) has large production and consumption over last decades. Its extensive utilization in personal care products and insufficient treatment in conventional wastewater treatment plants (WWTPs) has led to its listing as one of emerging organic contaminants (EOCs). Due to the hydrophobicity and chemical stability of TCC, it has been omnipresent detected in terrestrial and aquatic environments, and its prolonged exposure has thrown potential pernicious …
Publication
ID31978692Published Date2020-04-05JournalSpectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 2020-04-05, Volume 230
In this work, the one- and two-photon absorption properties of two quadrupolar A-π-D-π-A dyes, featuring carbazole and triphenylamine as donors of varying strengths, are calculated using density functional theory. The characteristics of two-photon excitation are analysed by using the three-state model closest to the real physical process. By taking the intermediate state as a bridge, the charge transfer characteristics in the two-photon excitation process are studied in detail by using variou…
Publication
ID31771887Published Date2020-04-05JournalJournal of hazardous materials, 2020-04-05, Volume 387
Herein, microwave-functionalized cellulose derived from rice husk was cost-effectively prepared and employed for Pb(II), Cd(II) and Ni(II) elimination in mono- and multi-component systems. Benefiting from microwave irradiation, the functionalized process was achieved in 6.5 min and the resultant RH-X possessed remarkably high adsorption capacities of 295.20 mg/g for Pb(II), 151.51 mg/g for Cd(II) and 72.80 mg/g for Ni(II) within the equilibrium time of 30 min. Noticeably, the metal ions adsor…
Publication
ID31901849Published Date2020-04-05JournalJournal of hazardous materials, 2020-04-05, Volume 387
A direct one-step calcination preparation of CuO catalyst (CuO-3) using polyethylene glycol (PEG) as nonionic polymeric structure directing agent was developed for activation of peroxymonosulfate (PMS). The morphological and physicochemical properties of the CuO-3 were characterized and the catalytic activity for degradation of organic pollutants was evaluated. The resultant CuO-3 with significantly enhanced surface area exhibited excellent catalytic performance of phenolic organic pollutants…
Publication
ID31780293Published Date2020-04-05JournalJournal of hazardous materials, 2020-04-05, Volume 387
A visible-light-driven photoelectrochemical (PEC) sensor has been developed for the "signal-on" analysis of Hg by the synergetic combination of low-bandgap AgS and wide-bandgap ZnS quantum dots (QDs). AgS QDs were synthesized with bead-chain-like structure by the self-assembly route and further covalently bound with ZnS QDs to be coated onto the indium tin oxide (ITO) electrodes. It was discovered that the ZnS@AgS-modified electrodes could display the visible-light-driven PEC behavior, of whi…
Publication
ID31818663Published Date2020-04-15JournalJournal of hazardous materials, 2020-04-15, Volume 388
The combination of electrolysis and persulfate (PS) activation was investigated to enhance the degradation of bisphenol A (BPA) using boron-doped diamond (BDD) and dimensional stable anode (DSA) in perchlorate, sulfate, and chloride media. The acceleration effect of BPA degradation followed the order of Cl>ClO>SO in BDD/PS and BDD system, while the degradation order in DSA/PS and DSA system was Cl>SO>ClO. The contribution of radical species (SO and OH), active chlorine and electrolysis were c…
Publication
ID31818673Published Date2020-04-15JournalJournal of hazardous materials, 2020-04-15, Volume 388
The effect of dissolved organic matter (DOM), derived from composted pig manure or rice straw, on arsenic methylation and subsequent biovolatilization in paddy soils was investigated. Arsine production following pig manure DOM application was 2.7- and 9.6-fold higher than that of soils treated with rice straw DOM and the control, respectively. Trimethylarsine was the dominant arsine at 54 %, followed by dimethylarsine at 22 %, arsine at 21 %, and monomethylarsine at 3 %. The copy numbers of t…
Publication
ID32090814Published Date2020-04-15JournalJournal of environmental management, 2020-04-15, Volume 260
Global warming is becoming more severe. We here proposed an innovative green technique aimed at reducing the CH emissions from constructed wetlands (CWs) in which CH is controlled by microbial fuel cells (MFCs). The results of our work indicated that CH emissions from CWs could be controlled by operating MFC. The CH fluxes significantly decreased in the MFC-CW (close circuit CC) compared with the control MFC-CW (open circuit OC). The bioelectricity generation and COD removal rates also differ…
Publication
ID31954307Published Date2020-04-15JournalJournal of hazardous materials, 2020-04-15, Volume 388
The emerging antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) are increasingly appreciated to be as important as microbial contaminants. This paper focused on UV-activated persulfate (UV/PS), an advanced oxidation process, in removing ARB and ARGs from secondary wastewater effluent. Results showed that the inactivation efficiency of macrolides-resistant bacteria (MRB), sulfonamides-resistant bacteria (SRB), tetracyclines-resistant bacteria (TRB) and quinolones-resist…
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